Ball-retainer for radial ball-bearings.



S. G. WINGQUIST.

BALL RETAINER' FOR RADIAL BALL BEARINGS.

APPucATmN FILED SEPT. 21. 1916.

Emmi-.AA im A ma?,

9 SHEETS-SHEET 2.

L INVENTOR UNTTED STATES PATENT onrion.

SVEN GUSTAF WING'QUIST, 0F GOTTENBORG, SWEDEN, -ASSIGNOR T0 AKTIEBOLAGET SVENSKA KULLAGr:ElRIEABRIKEN,` OF GOTTENBORG, SWEDEN, A. CORPORATION 0F SWEDEN.

To all whom t may concern.'

Be it known that I, SVEN GUsTAr WING- QUIsT, a subject of theKing of Sweden, residing at Gottenborg, in the Kingdom of Sweden,.have invented certain new and useful Improvements in Ball-Retainers for Radial ,Ball-Bea1-ings,lof which the following is a specification, reference being had to the drawings accompanying andforming a part thereof.

This invention relates to improvements in ball retainers for ball bearings, and particularly in ball retainers for radial ba, bearing having two series. of balls placed at the slde of each other, in a staggered relations 1p.

One offthe simplest, strongest andinost reliable ball retainers for double row ball bearings hitherto devised consists of a solid ring having laterally extending cylindrical bores ending in hemispherical seats for the balls. The present invention has for its object to provide a sheet-metal ball retainer which has the same desirable features and which is at the same time light, cheap and eflicient.

The invention consists, chiefly, in the retainer being formed of two separate sheet-y metal rings, one for each series of balls, said rings being folded so as to form pockets for the balls and placed in such position relatively to each other that the Walls of the pockets of-each ring project into the spaces `between adjacent pockets of the other ring in such manner that the rings will reliably support and keep each other in predetermined position relatively to each other.

`The inventionifurther consists in the construction and combination of parts hereinafter described and particularly pointed out in the claims.

The ball retainer according to the invention is particularly adapted for use in double row ball bearings of the self-alining type, in which the bearing rings are free to take up an oblique position relatively to each other and in which it is, therefore, of special importance that the balls are securely held 'in position on the inner ring even if the outer ring be swung in a position at right anglesto4 the former.

In the drawings, Figure 1 isa cross-sectional view of a self-alining double row ball bearing having a ball retainer according to the invention. Fig. 2 is an end view BALL-RETAINER FOR RADIAL BALL-BEARINGS.

Specification of Letters Patent.

b, inclusive.

Patente@ oet. e, i917.

Application led September 21, 1916. Seria1 No. 121,338.

view, `on an enlarged scale, of part of a ball bearing having a ball retainer according to the invention. Fig. 8 is an end view of the bearing shown in Fig. 7, and Figs. 9 and l0 are enlarged cross-sectionaliviews illustrating certain details of construction.

Referring to the drawings, a ball-separating sheet-metal ring l is provided for each series of balls, said rings bei-ng folded so as to form pockets for the balls. Different forms of the pocketsl are shown -in Figs. 3 to In the forni of embodiment shown in Fig. 3, each pocket 2 consists of one hemispherical part, corresponding to the half of a ball, and one cylindrical part having a diameter equal to that of a ball.

In the form of ball retainer shown in Fig. 4, the pockets 2 are spherical to such -an extent as to inclose more than the half of a ball.

According to Fig. 5, each pocket -2 consists of. a truncated cone 3 and a cylindrical part 4.

Fig. 6 shows a ball retainer having pockets 2 formed of a cone 3 and a cylindrical part 4.

It will be seen that in the form of the ball retainer shown in Fig. 4, the balls are held in the pockets in such manner that they cannot escape unintentionally, even if the two cage rings constituting the ball retainer be removed from the inner ring of thebearing. In the other forms of the ball retainer shown in the drawings, the balls are not securely held in the .pockets of the cage rings when the'said rings are removed, but' the cage rings are so' dimensioned thatv they will, nevertheless, prevent the balls from escaping when they are placed in position onV the inner ring 5. as clearly shown in Figs, 7 and 8. This is due to the fact that the triangle a, I), c'(Fig. 8) having its apices at the outermost points a and I) of a pocketfand,V

at the outer edge c of the ball race is smaller than a uniform triangle inscribedv in a great.-

circle of a ball. f.

In mounting the bearings, are placed with their rear sides in contact with nach other in such manner that the walls of the pockets of each ring projectA the cage rings into the spaces between the rear sides of adjacent pockets of the other ring, whereiiipon the two cage rings are placed around the inner race ring of the bearing` and filled with balls which are inserted forcibly into the pockets of the cage rings. When the balis have been inserted, they will secnrely keep the cage rings in position on the ii'iner race ring, and the cage rings will act, in eonjunction with the shoulders at' the outer sides of the races of the inner ring of' the bearing, to securely keep the balls in position, as hereinbefore described.

In order to provide a comparatively large bearing surface or' the two cage rings against each other, said rings are shown in -Figs. 9 and 10 suitably iiattened at the corr tact points 6, preferably to about halt the thickness of the sheet-metal of which they are formed. By this means, the further advantage is gained that the two cage rings can be brought nearer together so that 'the ball retainer as a whole will have a smaller width than would else be possible.

lt is obvious that the two cage rings may be connected together, if desired, in sonic suitable manner. ln Figs. 9 and l() the two cage rings are shown welded together at some, at least, of their points of contact (see 7).

il claim as -my invention l. A ball retainer for double row ball bearings, comprising two sheetanetal rings, one for each series of balls, each ring being folded so as to form pockets tor the balls, said rings being placed in such position relatively to each other that the walls of the pockets of each ring project into the spaces between the rear sides of adjacent pockets 0f the other ring. 2. A ball retainer for double row ball bearings, comprising two'sheet-metal rings, one for each series of balls, each ring being folded so as to form spherical pockets for the balls, said rings being placed in such position relatively to each other that the walls of the pockets of each ring project into the spaces between the rear sides ot adjacent pockets of the other ring.

3. A ball retainer for double row ball bearings, comprising'two sheetsinetal rings, one for each series ot balls, each ring being folded so as to fol-in partly spherical and partly cylindrical pockets tor the balls, said rings being placed in such position relatively to each other that the walls of the poclrets of each ring project into the spaces between the rear sides of adjacent pockets of the other ring.

ft. A ball retainer for double row ball bearings, comprising two sheet-metal rings, onc for each series of balls, each ring being :folded so as to form pockets for the balls, said rings being placed in such position relatively to each other that the walls of the pockets of each ring project into the spaces bclween the rear sides of adjacent pockets of the other ring, the parts of the two rings bearing on each other being flattened so as to provide large bearing surfaces.

A. ball retainer for double row ball hearings, comprising two sheet-metal rings, one :tor each series of balls, each ring being ifoliled so as to form pockets for the balls,

.said rings being placed in such position rel.

:iiiively to each other that the walls of the pockets of each ring project into the spaces between the rear sides ot adjacent pockets ot the other ring, the parts of the two rings bearing on each other being flattened to about half the thickness of the sheet-metal ot which they are formed so as to provide large bearing surfaces.

G. A ball retainer for double row ball bearings, comprising two sheet-metal rings, one 'For each series of balls, each ring being 'folded so as to form pockets for the balls, said rings being fastened together in such position relatively to each other that the walls ot the pockets of each ring project into the spaces between the rear sides of adjacent pockets of the other ring.

7. A. ball retainer for double row ball bearings, comprising two sheet-metal rings, one for each series of balls, each 'ring heilig folded. so as to form pockets for the balls, said rings being integrally connected together in such position relatively to each other that the walls of the pockets of each ring project into the spaces between the rear sides oi adjacent pockets oi the other ring. i

8. A ball retainer for double row ball bearings, comprising two sheet-metal rings connected by welding, each ring being folded so as to form pockets for the balls, said rings being placed in such position rel-v atively to each other that the walls of the pockets oi. each ring project into the spaces between the rear sides of adjacent pockets ol the other ring.

ln testin'ion y whereofv l allix my signature.

SVEN GUSTAF WlNGQUlST. 

